1. A teacher wishes to know whether the males in his/her class
have more conservative attitudes than the females. A questionnaire
is distributed assessing attitudes and the males and the females
are compared. Is this an example of descriptive or inferential
statistics? ( relevant section 1, relevant
section 2 )

2. A cognitive psychologist is interested in comparing two ways
of presenting stimuli on subsequent memory. Twelve subjects
are presented with each method and a memory test is given. What
would be the roles of descriptive and inferential statistics
in the analysis of these data? (relevant
section 1 & relevant section
2 )

3. If you are told that you scored in the 80th percentile, from
just this information would you know exactly what that means
and how it was calculated? Explain. (relevant
section)

4. A study is conducted to determine whether people learn better
with spaced or massed practice. Subjects volunteer from an introductory
psychology class. At the beginning of the semester 12 subjects
volunteer and are assigned to the massed-practice condition.
At the end of the semester 12 subjects volunteer and are assigned
to the spaced-practice condition. This experiment involves two
kinds of non-random sampling: (1) Subjects are not randomly
sampled from some specified population and (2) Subjects are
not randomly assigned to conditions. Which of the problems relates
to the generality of the results? Which of the problems relates
to the validity of the results? Which problem is more serious?
(relevant section)

5. Give an example of an independent and a dependent variable. (relevant
section)

6. Categorize the following variables as being qualitative or
quantitative: (relevant section)

Rating of the quality of a movie on a 7-point scale
Age
Country you were born in
Favorite Color
Time to respond to a question

7. Specify the level of measurement used for the items in Question 6. (relevant
section)

Converting from meters to kilometers
Squaring each side to find the area
Converting from ounces to pounds
Taking the square root of each person's height.
Multiplying all numbers by 2 and then adding 5
Converting temperature from Fahrenheit to Centigrade

9. The formula for finding each student's test grade (g) from his or her raw score (s) on a test is as follows: g = 16 + 3s

Is this a linear transformation? If a student got a raw score of 20, what is his test grade? (relevant
section)

11. If you wanted to conduct a study about the relationship between the amount of television watched a day and sports participation in children, which of the following two choices (a or b) would be the better way of asking that question? (relevant
section)

a) Check the best description of how much television you watch per day:

a lot _____ some _____a little_____none_____

b) Write the number of hours you spend watching television per day: _____

12. Which of the frequency polygons has a large positive skew? Which has a large
negative skew? (relevant section)

13. What is more likely to have a skewed distribution: time to solve an anagram
problem (where the letters of a word or phrase are rearranged into another word or phrase like "dear" and "read" or "funeral" and "real fun") or scores on a vocabulary test? (relevant
section)